Sell/Buy signal labels are missing in the plotting of forex data

Hello!
I am using the 1-minutes forex csv data for backtesting, odd thing observed is that the buy/sell icons are missing in the plotting.
using daily csv data from yahoo is fine, so looks there is some tricky issue in the csv part.
Could anybody please help me with the issue?

it seems that it is because of the data in forex csv file: the number is too small,
it will work if i change the price to bigger values, such as from "000000;1.123210;1.123240;1.123200;1.123240;0"
to "000000;3210;3240;3200;3240;0".

Notice that in the default configuration where you see the red/green triangles the parameters are there as (True, 0.015), i.e.: plot above the max/min and do it 1.5% above the price.

Notice how in the chart where you don't see them ... the configuration is the same. That means, literally

**The red/green (sell/buy) ** triangles are well above (at the top) and well below (at the bottom) of your chart, because you supply prices with a minimal variation which doesn't allow them to fit in the scale.

You can then use Rule #1 and Rule #2 again and see the plotting documentation if you want to let the scale be modified by all elements in the chart and not be dominated by the price.